How Long Does AWS D1.1 Welder Certification Last? (Expiration & Continuity Explained)

One of the most common questions welders ask is: “How long does my AWS D1.1 certification last?”

Some people say 6 months.
Some say 1 year.
Some say it never expires.

Here’s what actually matters.

The Short Answer

Under AWS D1.1, welder qualification does not automatically expire after a set number of years.

It remains valid as long as continuity is maintained.

That’s the key word: continuity.

What “Continuity” Means Under AWS D1.1

AWS D1.1 requires that a welder must use the qualified welding process at least once every 6 months to keep the qualification active.

If you weld with that process within a 6-month period:

✔ Your qualification remains valid
✔ You do not need to retest
✔ Your WQR remains active

If you do not weld in that process for more than 6 months:

❌ Your qualification lapses
❌ You must requalify for that process

That’s it.

There is no automatic “1-year expiration” in AWS D1.1 for active welders.

Where the Confusion Comes From

The confusion usually comes from:

• Employers who impose their own annual testing policies

• Different codes (like ASME Section IX) that are interpreted differently

• Training programs that retest yearly as a policy

Those are employer or program rules — not AWS D1.1 code expiration rules.

Always separate:
Code requirement
from
Company policy

Does Position or Thickness Expire Separately?

No.

If continuity is maintained in the qualified process, your:

• Positions

• Thickness range

• Qualification scope

remain valid as originally tested.

You don’t lose 3G but keep 4G — it’s tied to the process continuity.

What Documentation Proves Continuity?

Typically, continuity is maintained through:

• Employer weld logs

• Project welding records

• Supervisor sign-offs

• Internal continuity tracking

There is not a national database tracking your welds.

It’s your employer’s responsibility to document continuity — not AWS headquarters.

What If You Change Jobs?

This is important.

Qualification records are usually employer-held.

If you leave a company:

• Your qualification does not “transfer” automatically

• A new employer may require requalification

• Some may accept prior documentation, some may not

That’s not a code issue — it’s a liability and policy issue.

Quick Summary

Under AWS D1.1:

• Qualification does not expire annually

• It remains valid indefinitely if continuity is maintained

• 6 months without using the process = requalification required

• Employers can impose stricter rules

If you’re actively welding, your qualification stays active.

If you stop welding in that process for more than 6 months, you’ll need to retest.

Final Thought

Don’t let misinformation cost you unnecessary retesting.

Understand the difference between:

• Code requirements

• Employer policy

• Other welding codes

Know what actually applies to your situation.